Rail-cars



UNITED STATES PATENT OFFICE.

NELSON B. CARPENTER AND JOHN POWERS, NEW YORK, N. Y.

LIFTING-J ACK FOR MOVING RAIL-CARS.

Specification of Letters Patent No. 12,345, dated February 6, 1855.

To all lwhom t may concern.'

Be it known that we, NELSON B. CARPEN- TER and JOHN POWERS, of the city,county, and State of New York, have invented a new and Improved Jack;and we do hereby declare that the following is a full, clear, and exactdescription of the same, referenc'e being had to the annexed drawing,making a part of this specication, said drawing being a front view ofour improved `ack.

J The nature of .our invention consists in the peculiar construction ofthej ack, as will be hereinafter shown and described.

To enable others skilled in the art to fully understand and constructour invention, we will proceed to describe it.

A, A, represent two screw jacks of ordinary construction, B B being thescrews which enter the lower ends of the cylinders or bodies of thejacks. The two jacks are connected together by a frame C which isprovided with an arch D to insure the requisite degree of strength. Theacks are secured to the frame O by bolts (a).

E represents a slide, the base or lower part (o) of which lits in thet-op horizontal bar (c) of the frame C. Near the upper part of the slideE, there is a longitudinal recess made entirely through it and a bar Fpasses through this recess, the ends of the bar being fitted to the topsof the jacks A A. The bar F ts loosely in the slide so that the slidemay be moved along in either direction on t-he bar F and the top bar (c)of the frame O.

G is a screw rod which passes longitudinally through the slide E andtransversely through the jacks A, A.

H is a nut which fits in a recess in the slide, the screw rod G passesthrough the nut H.

The manner in which the jack is used will be readily seen. The slide Eis placed underneath the weight to be raised and the screws B, B, of thetwo jacks A A are then turned and the two jacks A, A, frameO, and slideE with the weight will be raised or elevated, when the Weight iselevated the desired height, the screw rod Gr is turned and the slide Ewith the weight-upon it may' be moved laterally either to the right orleft according to the direction in which the screw rod is turned. Theweight therefore may not be only raised but also moved laterally withthe slide without a second adjustment of the jack.

The above invention is admirably adapted for adjusting cars upon railroad tracks, very far superior to the ordinary lifting jacks which onlyraise the car vertically upward and consequently the employment of sillsor ways are required and a second ad-v giving a vertical and lateralmotion to the object or article to be adjusted, nor do we claim theslide E, separately or in itself considered, but

What we do claim as new and desire to secure by Letters Patent, is,

We cla-im the improved jack constructed substantially as herein shownand described, viz. connecting two ordinary screw jacks A, A, by a frameC, provided with an arch D, and having a slide E, litted on the upperpart of the frame C, the slide being connected to the frame as hereinshown and operated by a horizontal screw Gr, for raising and adjustingrail road cars upon the track and other analogous purposes.

` NELSON B. CARPENTER.

JOHN POWERS. Witnesses:

S. H. WALES, J. G, MASON.

